ch_02_ex12a.mdl

数字信号处理（机械工业出版社）的源码

	  BlockType		  Reference
	  Name			  "DSP\nConstant2"
	  Ports			  [0, 1]
	  Position		  [70, 114, 105, 146]
	  BackgroundColor	  "cyan"
	  DropShadow		  on
	  SourceBlock		  "dspsrcs4/DSP\nConstant"
	  SourceType		  "DSP Constant"
	  Value			  "n0"
	  SampleMode		  "Discrete"
	  discreteOutput	  "Sample-based"
	  continuousOutput	  "Sample-based"
	  sampTime		  "1"
	  framePeriod		  "1"
	  additionalParams	  "off"
	  dataType		  "Inherit from 'Constant value'"
	  wordLen		  "16"
	  udDataType		  "sfix(16)"
	  fracBitsMode		  "Best precision"
	  numFracBits		  "15"
	  InterpretAs1D		  "off"
	  Ts			  "1"
	  FramebasedOutput	  "off"
	}
	Block {
	  BlockType		  Reference
	  Name			  "DSP\nConstant3"
	  Ports			  [0, 1]
	  Position		  [70, 179, 105, 211]
	  SourceBlock		  "dspsrcs4/DSP\nConstant"
	  SourceType		  "DSP Constant"
	  Value			  "0"
	  SampleMode		  "Discrete"
	  discreteOutput	  "Sample-based"
	  continuousOutput	  "Sample-based"
	  sampTime		  "1"
	  framePeriod		  "1"
	  additionalParams	  "off"
	  dataType		  "Inherit from 'Constant value'"
	  wordLen		  "16"
	  udDataType		  "sfix(16)"
	  fracBitsMode		  "Best precision"
	  numFracBits		  "15"
	  InterpretAs1D		  "off"
	  Ts			  "1"
	  FramebasedOutput	  "off"
	}
	Block {
	  BlockType		  RelationalOperator
	  Name			  "Relational\nOperator"
	  Position		  [200, 52, 230, 83]
	  Operator		  "=="
	}
	Block {
	  BlockType		  Sum
	  Name			  "Sum"
	  Ports			  [2, 1]
	  Position		  [130, 50, 150, 70]
	  ShowName		  off
	  IconShape		  "round"
	  Inputs		  "|+-"
	}
	Block {
	  BlockType		  Outport
	  Name			  "Out1"
	  Position		  [275, 63, 305, 77]
	}
	Line {
	  SrcBlock		  "Relational\nOperator"
	  SrcPort		  1
	  DstBlock		  "Out1"
	  DstPort		  1
	}
	Line {
	  SrcBlock		  "DSP\nConstant2"
	  SrcPort		  1
	  Points		  [30, 0]
	  DstBlock		  "Sum"
	  DstPort		  2
	}
	Line {
	  SrcBlock		  "DSP\nConstant1"
	  SrcPort		  1
	  DstBlock		  "Sum"
	  DstPort		  1
	}
	Line {
	  SrcBlock		  "DSP\nConstant3"
	  SrcPort		  1
	  Points		  [65, 0; 0, -120]
	  DstBlock		  "Relational\nOperator"
	  DstPort		  2
	}
	Line {
	  SrcBlock		  "Sum"
	  SrcPort		  1
	  DstBlock		  "Relational\nOperator"
	  DstPort		  1
	}
      }
    }
    Block {
      BlockType		      SubSystem
      Name		      "Delta Impulse1"
      Ports		      [0, 1]
      Position		      [95, 135, 150, 175]
      TreatAsAtomicUnit	      off
      MaskType		      "Generates x(n)=delta(n-n0)"
      MaskDescription	      "Output a discrete delta impulse.n1<=n<=n2."
      MaskPromptString	      "Discrete time|Delay(samples)"
      MaskStyleString	      "edit,edit"
      MaskTunableValueString  "on,on"
      MaskCallbackString      "|"
      MaskEnableString	      "on,on"
      MaskVisibilityString    "on,on"
      MaskToolTipString	      "on,on"
      MaskVarAliasString      ","
      MaskVariables	      "n=@1;n0=@2;"
      MaskDisplay	      "disp('Discrete\\n Impulse')"
      MaskIconFrame	      on
      MaskIconOpaque	      on
      MaskIconRotate	      "none"
      MaskIconUnits	      "autoscale"
      MaskValueString	      "n|4"
      System {
	Name			"Delta Impulse1"
	Location		[416, 89, 768, 391]
	Open			off
	ModelBrowserVisibility	off
	ModelBrowserWidth	200
	ScreenColor		"white"
	PaperOrientation	"landscape"
	PaperPositionMode	"auto"
	PaperType		"A4"
	PaperUnits		"centimeters"
	ZoomFactor		"100"
	Block {
	  BlockType		  Reference
	  Name			  "DSP\nConstant1"
	  Ports			  [0, 1]
	  Position		  [70, 44, 105, 76]
	  BackgroundColor	  "cyan"
	  DropShadow		  on
	  SourceBlock		  "dspsrcs4/DSP\nConstant"
	  SourceType		  "DSP Constant"
	  Value			  "n"
	  SampleMode		  "Discrete"
	  discreteOutput	  "Sample-based"
	  continuousOutput	  "Sample-based"
	  sampTime		  "1"
	  framePeriod		  "1"
	  additionalParams	  "off"
	  dataType		  "Inherit from 'Constant value'"
	  wordLen		  "16"
	  udDataType		  "sfix(16)"
	  fracBitsMode		  "Best precision"
	  numFracBits		  "15"
	  InterpretAs1D		  "off"
	  Ts			  "1"
	  FramebasedOutput	  "off"
	}
	Block {
	  BlockType		  Reference
	  Name			  "DSP\nConstant2"
	  Ports			  [0, 1]
	  Position		  [70, 114, 105, 146]
	  BackgroundColor	  "cyan"
	  DropShadow		  on
	  SourceBlock		  "dspsrcs4/DSP\nConstant"
	  SourceType		  "DSP Constant"
	  Value			  "n0"
	  SampleMode		  "Discrete"
	  discreteOutput	  "Sample-based"
	  continuousOutput	  "Sample-based"
	  sampTime		  "1"
	  framePeriod		  "1"
	  additionalParams	  "off"
	  dataType		  "Inherit from 'Constant value'"
	  wordLen		  "16"
	  udDataType		  "sfix(16)"
	  fracBitsMode		  "Best precision"
	  numFracBits		  "15"
	  InterpretAs1D		  "off"
	  Ts			  "1"
	  FramebasedOutput	  "off"
	}
	Block {
	  BlockType		  Reference
	  Name			  "DSP\nConstant3"
	  Ports			  [0, 1]
	  Position		  [70, 179, 105, 211]
	  SourceBlock		  "dspsrcs4/DSP\nConstant"
	  SourceType		  "DSP Constant"
	  Value			  "0"
	  SampleMode		  "Discrete"
	  discreteOutput	  "Sample-based"
	  continuousOutput	  "Sample-based"
	  sampTime		  "1"
	  framePeriod		  "1"
	  additionalParams	  "off"
	  dataType		  "Inherit from 'Constant value'"
	  wordLen		  "16"
	  udDataType		  "sfix(16)"
	  fracBitsMode		  "Best precision"
	  numFracBits		  "15"
	  InterpretAs1D		  "off"
	  Ts			  "1"
	  FramebasedOutput	  "off"
	}
	Block {
	  BlockType		  RelationalOperator
	  Name			  "Relational\nOperator"
	  Position		  [200, 52, 230, 83]
	  Operator		  "=="
	}
	Block {
	  BlockType		  Sum
	  Name			  "Sum"
	  Ports			  [2, 1]
	  Position		  [130, 50, 150, 70]
	  ShowName		  off
	  IconShape		  "round"
	  Inputs		  "|+-"
	}
	Block {
	  BlockType		  Outport
	  Name			  "Out1"
	  Position		  [275, 63, 305, 77]
	}
	Line {
	  SrcBlock		  "Sum"
	  SrcPort		  1
	  DstBlock		  "Relational\nOperator"
	  DstPort		  1
	}
	Line {
	  SrcBlock		  "DSP\nConstant3"
	  SrcPort		  1
	  Points		  [65, 0; 0, -120]
	  DstBlock		  "Relational\nOperator"
	  DstPort		  2
	}
	Line {
	  SrcBlock		  "DSP\nConstant1"
	  SrcPort		  1
	  DstBlock		  "Sum"
	  DstPort		  1
	}
	Line {
	  SrcBlock		  "DSP\nConstant2"
	  SrcPort		  1
	  Points		  [30, 0]
	  DstBlock		  "Sum"
	  DstPort		  2
	}
	Line {
	  SrcBlock		  "Relational\nOperator"
	  SrcPort		  1
	  DstBlock		  "Out1"
	  DstPort		  1
	}
      }
    }
    Block {
      BlockType		      Gain
      Name		      "Gain"
      Position		      [140, 65, 170, 95]
      Gain		      "2"
    }
    Block {
      BlockType		      Sum
      Name		      "Sum"
      Ports		      [2, 1]
      Position		      [200, 65, 230, 95]
      ShowName		      off
      IconShape		      "round"
      Inputs		      "|+-"
    }
    Block {
      BlockType		      ToWorkspace
      Name		      "To Workspace"
      Position		      [265, 65, 325, 95]
      VariableName	      "x"
      MaxDataPoints	      "inf"
      Decimation	      "11"
      SampleTime	      "-1"
      SaveFormat	      "Array"
    }
    Line {
      SrcBlock		      "Delta Impulse"
      SrcPort		      1
      DstBlock		      "Gain"
      DstPort		      1
    }
    Line {
      SrcBlock		      "Delta Impulse1"
      SrcPort		      1
      Points		      [60, 0]
      DstBlock		      "Sum"
      DstPort		      2
    }
    Line {
      SrcBlock		      "Sum"
      SrcPort		      1
      DstBlock		      "To Workspace"
      DstPort		      1
    }
    Line {
      SrcBlock		      "Gain"
      SrcPort		      1
      DstBlock		      "Sum"
      DstPort		      1
    }
  }
}